It's not all human civilization. I'm in Japan right now and it's not happening like that here. Don't misunderstand, things aren't perfect here, there's other issues, but the kids are mostly alright.
And even in Canada it's not everybody with these issues, it's mostly the anglos. Lots of non english private schools that don't have these issues for various reasons - banned cellphones, stricter rules, stricter parents, etc.
My friends in China tell me the kids there also don't have these issues. Again, other issues, but not these.
The numbers don't lie - scandinavian countries are happier and healthier.